benson



1,623,860 Aprll 5, 1927. D A BENSON FURNACE ROOF STRUCTURE Filed March2e, 1926 2 sheets-sheet 1 l L L o 1 Aprll 5, 927 D. A. BENSON FURNACEROOF STRUCTURE Fileduarch as, 192e 2 sheets-sheet 2 Patented Apr. p 5,1927.

UNITED saiEs PATEn'r EEicE.,

DAVISSON BENSON, OF FROSTBUG, MRYLAND, ASSIGNOR TG STANDARB ARCHCOMPANY, O E FROSTBURG, MARYLAND, A CORPORATIN 0F MARYLAND.

FURNACE-ROOF STRUCTURE.

Application tiled March 26, 1926. Serial No. 97,719.

My invention relates to vfurnace rooil structures and is primarilydesigned to all ford` a simple, reliable and eiiicient constructionwhich.' may V be erected and repaired with a` minimum expenditure otlabor. p

A more speciiic object of the invention is to provide a combination andarrange ment of parts permitting` metallic elements of simple :torni tobe employed. Another object of the invention is to `so torni and relatethe bricks to their metallic support and to each other that they may bereadily brought into assembled relation and easily removed in the eventreplacements become necessary. A still further object ofthe invention isto form and relate the bricks in a manner enablingthem to adjustthemselves When assembled and to eiliciently distribute the strainsimposed upon them.

Other features of the invention residing,- in advantageous relations andforms or parts will hereinafter appear and be pointed out in the claims.

In the drawings illustratingpreferred embodiments ot the inventionFigure l is a vertical transverse section. of the upper portion or aiurnace involving a roof constructed in accordance with the invention.

Figure 2 is detail sectional view, taken on the line 2--2, Figure l.

Figure 3 is a detail view showing a por tion of one oi" the carriers,the Vbricks associated therewith and the clip or cover Yfor preventing'removal ot the bric 7e from the carrier.

Figure l is a. detail sectional view on the line 4 4, Figure y Figure 5is a view correspondinp,- to Fig;I- ure l but illustrating a modiiiedform oi lthe invention.

Figure l6 is. a transverse sectional view ot a furnace illustratingv aiorm o'il curved arch furnace root embodying' the invention.

vin the drawings l'-1 are the side walls of the furnace and 242 arebuckstays. 'lhe buckstays on opposite sides of the :furnace areconnected in the usual or any preferred manner by tie rods 3. Extendingupward ly ilirom the side Walls ot the iurnace and `rigidly secured inplace, as by being riveted to adjacent buckstays 2, are oppositelydisposed columns et vvhose upper ends support 'correspondingtransversely extending `may conveniently be in the form ot Lbea-ms.

lhe upright columns i are preferably channels and the overhead beamsinay be rigidly secured thereto through angle irons or brackets 6.

Suspended from each oi' lthe overhead beams 5 by means of a series oi'hanger devices 7 is a rigid brick supporting member 8 `Which is open onits underside. The hanger devices 7, as more particularly shown inFigure2, may advantageously consist of angular or hook like members 9 whichoverlap the lovver flanges of the over` head beam 5 and are connected bya bolt l0 to a tlneaded rod ll. rlhis threaded rod cooperates with aturnbuckle l2 having threaded engagement with a rod 13 iorming the lowerelement of the hanger. Vlhcre, as is preferred, the brick supportinginembers 8 are in the torni oit downwardlyopening slotted cylindricaltubes, the material slotted trom the tube may be punched and utilized asa bearing strip iid for reinforcing the tube at its point oi?attaclnnent to the hangers; Y

The rigid brick carriers 8 entend continuously from one side ot thefurnace to the other, preferably being integral and open ended and eachtermed from a hollow cylindrical metallic tube slotted on its lower sideso as to provide downwardly converging Walls or portions l5 'forsupporting, bricks i6. Each ci thebricks 1 6 is fashioned at its upperend with ahead 17 adapted to be received within the "tube 8, the headbeing preferably :formed with lateral cylindrical faces correspondimitothe curvature o'i' the inner lWall ot the tube. By this means, will bereadily appreciated, the bricks i6 may adjust themselves angularly `inacomunicaIation` to the strains imposed uponthem. 'ilhe upper endsot theheads i7 oi the bricks 1.6 are suitably recessed to atiord, as at i8,clearance lfor the lower ends oi'i the hanger rods i3 and rein'lprcin``members ifi.

ill-ach of the downwardly openingl brick carriers 8 supports a singlerow ot bricks i6. ln order to permit the removal and rei placement otindependent bricks 16 Without the necessity oi disturbing all the bricksin a row, each of the hollow brick carriers 8 is Vcut away or recessedintermediate its ends to form a lateral opening 19 which communicateswith the slot in the bottom of the carrier. A plurality ofthe openings19 is preferably employed, their spacing being governed generally by thewidth .of the furnace and the thickness of the bricks employed. Tosupport the bricks 16 positioned in overlapping relation to the openings19, the brick carrier 8 preferably has mounted thereon a series of clips2O for respectively covering the openings 19. A portion of each of theseclips is provided with an inwardly extending projection or liner 21y(see Figure 4) which is adapted to it into the correspondingly shapedopening 19 so as to make the inner wall of the brick support ing member8. continuous. As the openings 19 and liners 21 of the` clips arepreferably tapered downwardly they cooperate to prevent the clips fromrotating toward the body of brick thus insuring proper clear` allee.`ldlhen a brick 16 is to be removed after the furnace hasbeen erected theclip 20 which is nearest thereto is removed from the tubular member 81as will be readily understood.

Intervening between each pair of adjacent rows of bricks and supportedby the latter is an intermediate row of bricks 22. To facilitategrinding of the bricks so as to insure their proper size and theprovision of suitable bearing surfaces, as well as to enable the bricks22 to accommodate themselves to minor variations in the sizes andvertical positions of .the bricks 16, the bricks 16 are preferablyformed with outwardly and downwardly inclined lateral faces 23 uponwhich correspondingly inclined downwardly converging faces or shoulders24 Vof the bricks 22 seat. In assembling the roof structure theintermediate rows of bricks are placed in position after the rows ofbricks 16 have been brought into assembled relation with the brickcarriers S. Any brick 22 may be immediately removed and replaced if anew brick is required to be substituted therefor7 but it will beobserved that before a brick 16 can be disengaged from its carrier 8 itis necessary to remove one or more of the bricks 22 which are adjacentthe opening 19 in the carrier through which the brick 16 is to bewithdrawn. The vintermediate bricks 22 therefore prevent removalr of thebricks 16 even after the appropriate cover 21 for the opening 19 hasbeen removed.

To limit undue shifting of the bricks 22 of the intermediate rowsmetallic straps 25 which are supported by the side walls of thefurn-aceand extend across the ends of the row of bricks may be employed. A gastight closure at the end of the arch may be provided by the use of thewell known sand spacers are burned out7 thus allowing `for expansion ofthe bricks.

In the construction shown ni li`igure l' the tubular carriers 2T bywhich the liriche-i 16 are suspended are formed at their outer ends withdown turned curved portions 2.8 which terminate at the top of tl i sidewalls 1 of the furnace. The space between the outermost bricks 16 andthese curved poi'- tions 28 of the brick carriers is occupied by skewback bricks 29 which project into the tube 27 in a manner similar to thebricks 16. Except for these diil'erences the construction shown inFigure o is identical with that illustrated iii Figures l to 4.inclusive and heretofore described and accordingly similar parts havebeen idci'ititicd with corresponding reference numerals.

Figure 6 illustrates a forni of furnace roof construction showing theapplicability of my invention to a curved arch roof. ln this instancethe tubular members S by which the bricks 16 are carried extendloiigitudinally of the lfurnace and are adjusted vertically by means ofthe turn buckle hangers 'i' so as to assume. proper elevations to givethe desired curvature to the arch.

The invention provides an eiiicient roof which may be readily erectedand maintained and although preferred ei'iibodiiiients have beendescribed With particularity it is to be understood that changes inforni and in the proportion of parts arc contemplated within the spiritof the invention and the scope of the claims.

I claim:

1. A furnace arch construction involving an integral slotted tubularmember adapted to support a plurality of bricks having heads received bysaid slotted tube? said member being provided with a cut out por tion.to permit the removal of bricks therefrom at a point intermediate itsends.

2. A furnace arch construction involving a brick supporting memberadapted to einbrace and thereby support a plurality of bricks, saidmember being provided with a` cut out portion intcriiiediate its ends topermit the removal of bricks theicfroiii. and means for supporting'bricks positioned in said cut out portion involving a clip adapted toembrace said .supporting member.

3. A furnace arch construction involving a plurality of rigid bricksupporting meinbers extending continuously from one wall of the furnaceto the opposite wall thereof, spaced rows of bricks supported by saidmembers, and row-s of bricks intermediate said supported rows andcarried by the supported rows, said rigid brick supporting membersheilig fashioned to permitt'he removal of bricks therefrom intermediateits ends only after the removal of bricks from said intermediate rows.

4. A furnace arch construction involving a plurality of integral bricksupporting members, spaced rows of bricks supported by said members,rows of bricks intermediate said supported rows and carried by saidsupported rows, each of said brick supporting members being providedwith a cut out portion intermediate its ends to permit removal of brickstherefrom only after at least one of the bricks in the intermediate rowadjacent said cut out portion has been removed.

5. A hollow brick supporting member for a furnace roof provided with aslot extencb ing longitudinally thereof, said member having'convergingbrick engaging shoulders enabling the bricks to adjust themselves inaccordance with the strain imposed thereon, one of said shoulders havinga cut out portion to permit the removal of bricks from said member at apoint intermediate its ends.

6. A furnacearch construction involving a row of headed bricks, and ahollow integral member adapted to support a plurality of the bricks inthe row, said member being provided with a slot extending longitudinallythereof, the portions of the member adjacent the slot being inclined toprovide brick engaging faces, at least one of said faces heilig cut awayto permit the removal of bricks from the member at a point inter mediateits ends.

7. A hollow integral brick supporting member adapted to support aplurality of bricks, a longitudinally extending slot therein, the wallsof said member adjacent said slot converging downwardly towards eachother to form brick supporting shoulders, and a portion of at least oneof the walls adjacent the slot being cut away to permit the removal ofbricks from the supporting member at a point intermediate the endsthereof.

8. A furnace arch construction involving a plurality of rows of bricks,longitudinally slotted hollow supporting members for receiving the upperends of the bricks, the walls of each of said members adjacent the slotconverging downwardly towards each other to form brick supportingshoulders and a portion of at least one of the walls adjacent the slotbeing formed with a recess permitting the removal of bricks from thesupporting member at a point intermediate its ends, and meansrespectively overlapping said recess for normally preventing withdrawalof said bricks.

9. A furnace arch construction involving a rigid hollow cylindricalbrick supporting member, means for supporting said member from above,and a plurality of bricks eX- tending into said member and carried thereby, said supporting member extending continuously from one wall of thefurnace to the opposite wall thereof and provided with means permittingthe removal of bricks therefrom at a point intermediate its ends.

10. A furnace arch construction involving an integral hollow cylindricalbrick supporting member having a longitudinally eXtend ing slot, aplurality of bricks extending into said member and supported thereby,said member being provided with a portion to permit the removal ofbricks therefrom at a point intermediate its ends.

ll. A furnace arch construction involving a plurality of integraltubular slotted brick supporting members, a plurality of bricks adaptedto be engaged by each of the supporting members and supported thereby,each of said members having a cut out portion permitting the removal ofbricks intermediate its ends, and means for supporting the bricks ineach of the cut out portions.

12. A furnace arch construction involving a brick supporting memberadapted to embrace and thereby support a plurality of headed bricks,said member being provided with a cut o-ut portion permitting theremoval of bricks therefrom at a point intermediate its ends, and amember adapted to embrace the brick supporting member and engage thebricks positioned in said cut out portion.

13. A refractory brick, having at its upper end a headed portionprovided with downwardly converging bearing faces, oppositely disposedsubstantially parallel faces at its lower end, and intermediate facesconverging upwardly toward the head and intersecting the parallel faces.

la. A refractory brick having at its upper end a headed portion providedwith suhstantially cylindricz lly curved bearing faces, oppositelydisposed substantially parallel faces adjacent the opposite end thereof,and interinediate faces angularly disposed with respect to the saidparallel faces.

In testimony whereof lf affix my signature.

DAVISSON A. BENSON.

